Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c86b6e8dbb08a08…

MALICIOUS

PDF

72.0 KB Created: 2021-03-20 19:42:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 12b7eee746a58503f03e350b8067525f SHA-1: 17717d0a279506d69b6edcd959bb486748092e14 SHA-256: 7c86b6e8dbb08a08e75e81ff0fa461b22dba31c681b97761b33179efe4758202
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jumiwimov.ru/wix?keyword=ati+teas+6+study+manual+corrections PDF link annotation
    • http://pixelbarista.com/sports_live_apkpurefascz.pdfIn PDF document text
    • http://esportzmlevent.com/3278293986ym2b6.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/nafizabetotost1ibd.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/jcidkam/vertical_form_fill_seal_packaging_machine_price.pdfIn PDF document text
    • http://7lessons.fun/nitrogen_trichloride_polar_or_nonpolqlahc.pdfIn PDF document text
    • http://max-lifting.store/arduino_mega_vs_unofcw0d.pdfIn PDF document text
    • http://christinaanddavid2019.com/33746662702d7qa7.pdfIn PDF document text
    • http://probnik1313.tech/86746683209svni7.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/ese4Ihi/16862627793.pdfIn PDF document text
    • https://cdn.sqhk.co/fifibaje/hhfjehQ/alvaro_soler_la_cintura.pdfIn PDF document text
    • http://formblckr1.xyz/66574197677wwpec.pdfIn PDF document text
    • https://tidoxanarapora.weebly.com/uploads/1/3/2/7/132710787/katuxabiga.pdfIn PDF document text
    • http://fb-ig-violation.com/class_trait_point_checklist_lotrojg43q.pdfIn PDF document text
    • https://xosotujusosevo.weebly.com/uploads/1/3/4/3/134377620/9ddd7eef5492.pdfIn PDF document text
    • https://rosavipufek.weebly.com/uploads/1/3/5/3/135315232/gojilefanud-vevizo-xarumidokam-geruwa.pdfIn PDF document text
    • https://cdn.sqhk.co/zowipitilo/MiEqgfw/21275037933.pdfIn PDF document text
    • https://cdn.sqhk.co/mitugejaxel/gfBghFk/cut_paste_photo_editor_apk_mod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/db17a722-f6ce-4d72-bbf5-a68c56d269f4/samsung_p2770hd_standfu_entfernen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ec8e1a5-8a5b-4d5d-bde9-22b735f7d5ad/6442307013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbfeda40-98f5-4eac-b5f9-b3b11824256b/kuvitudulobibirokabuwiro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a86a9d54-690f-474f-808d-4194e7875d2d/71056200635.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37d33400-ac85-4a26-ac23-3cee19f86541/fm_22-102.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4E 5328 bytes
SHA-256: c2c2ab502f52a15c43d9d824b3c92e3586067ab38c24b6faf5dcaa36bf0859c7
font_01_sfnt_off0000ee62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE62 10512 bytes
SHA-256: c95a527d870819f19d3d40a2ac5b0d7a8293d4d9cab595046c82db4b14e5c993

Open this report in the interactive analyzer, or submit your own file for analysis.